400036666998 has 32 divisors (see below), whose sum is σ = 819707236992. Its totient is φ = 130074190400.

The previous prime is 400036666993. The next prime is 400036667083. The reversal of 400036666998 is 899666630004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400036666993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617133 + ... + 1848023.

It is an arithmetic number, because the mean of its divisors is an integer number (25615851156).

Almost surely, 2^400036666998 is an apocalyptic number.

400036666998 is an abundant number, since it is smaller than the sum of its proper divisors (419670569994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400036666998 is a wasteful number, since it uses less digits than its factorization.

400036666998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237980.

The product of its (nonzero) digits is 10077696, while the sum is 57.

The spelling of 400036666998 in words is "four hundred billion, thirty-six million, six hundred sixty-six thousand, nine hundred ninety-eight".